The given statement is
"11 less than the quotient of a number, n, and 5 is 9."
To express this statement as an algebraic expression, we have to transform each part.
"a number" means the variable n.
"the quotient" means a fraction where n is the numerator and 5 is the denominator.
"is 9" means it's equal to 9.
"11 less" means we have to subtract 11 from the fraction.
Having said that, we express the following.
Now, we solve for n
Therefore, n is 100.